Loza I. Harmonically vibrations nonhomogeneous piezoceramic cylindrical and spherical bodies

An effective numerical-analitical description of solution of dynamical problems of theory electroelasticity (harmonically process) for cylindrical and spherical bodies. It is developed algorithms which are realized in application-oriented computing system for calculation of dynamic characteristics of non homogeneous piezoceramic (including FGPM) cylindrical and spherical bodies. Obtained computing system allows us to calculate the changes of geometrical and physical variables in wide range. On the basis of proposed approach the investigations of the new theory electroelasticity problems of determination of spectral characteristics of non homogeneous piezoceramic circular waveguides and naturals frequencies of oscillation of nonhomogeneous piezoceramic cylindrical and spherical bodies are carried out. Variety of new regularities of spectral characteristics was identified on basis of obtained solutions, which are connected with non homogeneous construction and coupled electric field in piezoceramic layers. Investigations of influence the non homogeneous construction and coupled electric field on spectral characteristics of above mentioned bodies are implemented. The estimations were given for determination of validity of limits of engineering theories.